小学英语必背公式有哪些?
小学英语必背公式如下:
she is interested in swimming in the river.
My btother is interested in Chinese.
she was pleased to help the old man yesterday.
be pleased with sth.对某事感到高兴/满意.
the teacher was pleased with my answer.
be interested in sth/doing sth.对某事感兴趣/对做某事感兴趣.
be glad/happy to do sth.高兴去做某事.
she is happy to clean the blackboard with me.
小学英语必知的语法:
情态动词本身就具有一定的词义,但要与动词原形以及其被动语态一起使用,给谓语动词增添情态色彩,表示说话人对有关行为或事物的态度和看法,认为其可能、应该或必要等。情态动词后面加动词原形。
情态动词不能表示正在发生或已经发生的事情,只表示期待或估计某事的发生。
情态动词除ought 和have外,后面只能接不带to的不定式。
情态动词不随人称的变化而变化,即情态动词的第三人称单数不加-s。情态动词不受任何时态影响即不加三单。
情态动词没有非谓语形式,即没有不定式、分词等形式。